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IMM
I - Dot Sensor
 The IMM (Inside Moebius Mutual Inductance) sensor is an inductive current probes used to measure the time rate-of-change of the total current through the sensor aperture. These sensors are very similar in function to the CPM I-dot sensors (Data Sheet 1120). The sensing gap is on the inner annular surface. The sensor is constructed as a single unit and is individually designed to fit a particular application. The current measured can be either that carried by a conductor or can be a free space current. Among applications where these sensors have proven themselves are: 1) in measuring the instantaneous current (and thus the instantaneous voltage) on the coaxial feed lines of pulsed simulators driven by VandeGraaff or Marx generators, and 2) in the measurement of the instantaneous current in electron and proton beams. In both applications, the IMM sensors were made to be part of the outer conductor or the vacuum enclosure and so do not interfere with the current being measured. The following specifications list sensors which have been made. We can make these sensors to meet a wide range of sizes and electrical specifications. Connector configurations other than the TCC are available upon request (e.g., dual N-type, male & female, etc.). 
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